Virtualbox works fine for you (And me too, apparently). But it visibly does not for many, as vboxdrv makes things crash in such volume that it spams bug reporting databases enough for someone to be pissed out enough by that fact to put together a patch containing creative names. Also enough (yet probably not vbox specific but it sure masks vboxdrv data) that Debian, Suse and RHEL took proactive measures to flag all out of tree modules.